Elystia, S., R. Kristin, and D. Andrio. “Application of Sequencing Batch Biofilm Reactor (SBBR) Using Microalgae Chorella Sp. To Removal Nutrient in Grey Water”. Jurnal Teknik Kimia Dan Lingkungan, vol. 7, no. 1, Apr. 2023, pp. 24-38, doi:10.33795/jtkl.v7i1.338.